Oil-burner.



C. W. IVIUMMERY.

011 BURNER;

APPLICATION FILED FEB. I3. 1915.

Patented Nov. 15,1915.

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specification of Letters Patent Application led February 13, 1915. Serial No. 7,957.

To all whom it may concern:

Be it known that I, CLYDE W. MUMMnnY, citizen of the United States, residingv at vRiverton, in the county of King and State of "Washington, have invented a certain new and useful Improvement in Oil-Burners, of which the following is a specification.

My invention relates to improvements in `fluid' fuelburners, and the object of my incomplish this object 'by devices illustrated in the accompanying drawings, wherein- Figure 1 is a view; in side elevation of a lilitrueture embodying my invention, showing f a portion of one of its parts broken away i more clearly to show other parts; Fig. 2 is a plan view of a detail of the same; Fig. 3 is a View in vertical cross-section of the saine on broken line ai of'lig. 1; and Fig. l is a view ofthe same in vertical longitudinal section on broken line y, y of Fig. 3.

Referring to the drawings, throughouty f whichA like reference numerals indicate like parts', 5 is a vhollow superheater, preferably of cast ironand of' rectangular form,iwhich is provided with a screw-threaded inlet passageway eXtendingt-hrough its bottom wall i 8 at one of its corner portions and `with an 1 outletV passageway 7 that extends through said bottom wall 8 at the corner portion that is diagonally opposite the inlet passageway 6, and whiohis further provided with a plurality of air passageways 9 which extend upwardly through the bottom wall 8 and the top wall 10 and through integral annular walls 11 which are indicated by circular dotted lines in Fig.y 2, which annular walls 11 serve to imite thejbottoin wall 8V with the top wall 10.

' llisteain'generatorl7 `'oreferably of cast iron, is disposedbeneath one edge portion of the superheater 5to extend througho-ut the lengththereof and is provided at one of its end portions with an outlet passageway 13 which is connected 'witl'igthe inlet passageway 6 of the superheater 5 by means ,of a Ascrewthreaded nipple 14; while its other end porjtion is. provided with an inlet passageway to which is connected a water supply pipe 15, as more clearly shown in Fig. d, whereby water may be admitted into the generator l2 for making steam whichinay flow therefrom yinto the superheatei'- 5. The steam generator 12, preferably is formed to be oblong in cross-section `in order tiat for a given quantity of water contained therein a greater area of its inner surface may be in contact with suoli water thereby more rapidly to generate steam. a

Connectedwith the outlet passageway'? of the superheater 5 is one end of an elbow 16 into the other end of which -is' screwed one end of a pipe 17 which pipe 1T entends rat-enten new ie, isis.,

parallel with and beneath that edge portion burner-tip 19 whose other end is closed by a cap 20. The pipe 1.7 is preferably formed to be oblong inl cross-section between its end portions to present a greater area of its internal surface to a contact with a given volume of fluid passing therethrough than it-would if it were of cylindrical forni throughout. its length, and for like reasons the tubular burner-tip 19 is of semi-circular crossvsection, as more clearly shown in Fig.` `3. rllhe tubular burner-tip 19 is provided with a plurality of holes 21 through its wall which are disposed in a row alongrthe upper- Vmost portion of such wall through which holes 21fluid fuel may be emitted to produce a flame that shall be directed vertically upwardk against the bottom of the superheater 5,;.and such burner-tip 19 is provided with a plurality of'other holes 22 through its wall which holes 22 are disposed in la row` along a line that is approximately forty five degrees from the row of theholes 21 on that sfide thereofthat `is nearer the generator 12, as more clearly shown in Fig. 3, through which holes 22 may be emitted fluid fuely whose flame will be directed against the ad- `jacent side of said generator 12. n

A fluid fuel supply pipe 23 leading from a source of fluid fuel supply (not shown) has its'delivery end connected with the elbow 16 to adapt it to deliver fluid fuel to the interior of said elbow 16 wherefrom it may flow 4through the pipe 17 and through the U L @shape-d fitting 18 into the tubular burner- Awtipultl toI be emitted throughthe rowsof f may mix with the steam that flows into thev holes 21 and 22, respectively, and within the elbow 16 and the pipe 17 such fiuid fuel elbow 16 from the interior of the superheater 5.

The structure thus described is disposed i to be supported on brackets 24'and 25, the end portions of the pipe 17 resting each on one of the brackets 24 while the end portions of the generator' 12 rest each on one of the brackets 25, as more clearly shown in e Figs. land 4. The brackets 24 and 25 are secured tothe inner surface of the lbottom of a pan 26 whose top edges are provided with integral flanges 27 which project outwardly therefrom in Vla horizontal plane, such-flanges 27 being adapted to support the pan 26 and its contents when disposed within the firebox of a stove, not shown.

.Within the bottom portion of the pan 26 I have provided fibrous absorptive material 33, preferably mineral wool or asbestosY fiber,

VWhich when .saturated with oil may serve -tankr28 extends one of the screw-threadedV ends of a cock 30 whose lower Yscrew-threaded end is disposed to extend through the top wall of an` inclosure 31, from the lower portion of Yone side of which extends the supply pipe 15 whereby water may flow from the inclosure 31 into vthe vgenerator 12. The

lower end of anl air pipe 32 is screwed intov j and through the top wall of the inclosure 31 to extend upwardly adjacent to thevertical ,wall of the tank 28 to a point ashigh as the top of such tank 28, through which air pipe 32 air may always lindaccess tothe interior yof the Vinclosure 31.

The operation'of a burner embodying my invention, as thus shown and described, is Yas follows: The cock 30 is turned to a closed posit-ion and the stopper 29 is removed from the opening in the top of the tank 28 whereupon such tank 28 is filled with water Vand then the'stopper 29 is replaced' and screwed tightly to make such tank 28 airtight,there upon `the cock 30 is opened to permit water to flow into the vinclosure 31 wherefromsuch water will then vind its way through the water supply pipe 15 into the generator 12 and such flow of water through the cock 30 will continue to iiow until the surface of the water in the generator V12 rises to a plane4 level with the lower end of the cock 30 with- Vin the inclosure'31 whereupon the surface t of the water within the inclosure 31 will act toseal` the passageway'through the cock 30 to prevent air from the pipe 32 finding its i way upwardly through such, cock 30 into the tank 28 to replace the water as such water percolates downwardly through the small passageway of the cock 30 into the inclosure 31 and since no air can get into the tank 28, so long as the water level covers the lower end of said cock 30, no water will How downwardly from the tank 28 through the cock 30 because such lesse'ning of the amount of water in the tank 28 would tend to form a vacuum therein. Thus, by suchA arrangement of'the'tank 28, vthe cock 30, the inclosure 31, the'pipe 15 and the genera-' tor 12, it is obviousthat as the water in thev generator 12 is converted into steam thus to lower its level sufficiently to cause the level of the water in the inclosure 31 to fall sufiiciently to unseal the mouth of the lower" end ofthe cock 30, thenfwater will immediately commence again to iow from the tank 28 to replace the water in the generator 12 as suoli `water is converted into steam,

whereby the level ofthe water inthe 'gener-`- ator 12 is constantly maintained at a constant height irrespective of the rate at which such water is converted-into'steam.V Y

After the tank 28 lia-sbeen filled with-water and the stopper 29 is-.screw'ed into its position to close tightly the opening in the top of the tank 28, then fluid fuel, as mineral oil, is .admitted into the elbow 16 wherefrom such oil flows through the pipey 17 and through'the U shaped fitting 18 into the burner-tip :19 to flow out oftheholes 21 and -22 to drop into the bottom of the pan 26 to saturate the fibrousA absorptive material 33 and when enough oil hasy dripped into the pan 26v thoroughlyV to soak the absorptive material 33 then such oil is ignited and the flame of suchfburning oil will heat the generator 12 to generate steaml therein and will heat the superhea-ter 5 to superheat the steam flowing therethrough from the generator 12 and will Vheat the pipe 17 to vaporize the fuel oil flowing therethrough'whereby such fuelV will be mixed with superheatedfsteam before reachingfthe burner-tip 19, thus to be emitted from the holes 21 and 22 in the form of a highly combustible mixture which will produce a blue flame ythat willV deposit no carbon and which will be so directed that-the voil will be converted into vapor or gas which superheater 5 will be substantially atV the same temperaturev throughout all its p0rtions.

1n some cases it may be found desirable to dispose the pipe 17 so that its end adjacent to the elbow 16 may be higher than its end adj af cent to the U shaped fittingf18 thus to cause mineral oil more readily to flow toward the lighting the burner.

While I have shown my'preferred form of .cross-section of they pipe 17, the burner-tip burner-tip 19 lin the initial operation Vof 19 and the generator 12 it is manifest that such form of cross-section may be Widely modified, and all parts of the structure may be changed with respect to their forms, dimensions and arrangement Without departing from the spirit of my invention.

What I claim is:

An oil burner of the class described, comprising a supporting tray, a hollow rectangular superheater having inlet and outlet passages disposed at opposite corners thereof and located above said tray, a steam generator mounted Within the tray and extend ing beneath one side of the superheater and having communication with the inlet passage thereof, .a supply pipe extending through a Wall of the tray and communicating with the generator, a burner pipe eX tending longitudinally of the center of theV tray and provided with a series of burner orifices arranged vertically above the center of the pipe to project flames against the superheater, said burner pipe being Jfurther provided With a second series of orifices discharging laterally against the steam genera tor, a pipe connecting said burner pipe and the outlet of the superheater and underlying the side of the superheater opposite the steam generator, and a 'Huid fuel supply pipe lea-ding into the last-mentioned pipe adjacent its connection to the superheater.

ln Witness whereof, l, hereunto subscribe my name this twenty ii'th day of January,

CLYDE WV. MUMMERY. Witnesses:

O. JOHNSON, FRANK WARREN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, I). C. 

